Common Rootrot and Plant Development Following Treatments of Wheat Seed With Aldrin, Gamma Bhc, and Heptachlor, With and Without Mercury Fungicides

Burrage, R. H.; Tinline, R. D.

doi:10.4141/cjps60-099

Cited by 16 publications

(10 citation statements)

References 2 publications

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“…Seven weeks after seeding, the plants were removed from the soil and the subcrown internodes rated as 0 (nil), 2 (slight), 5 (moderate), or 10 (severe) for root rot damage, according to the method of Ledingham et al (1973). Data on the number of plants in each category were summarized as percentage root rot (% RR) according to the formula described by Burrage and Tinline (1960): The "wheat" soil came from a field where the root rot-susceptible wheat cultivar Cypress had been grown for at least 5 successive years. The "barley" soil was from a field where the susceptible barley cultivar Gait had been grown for the preceding 5 years.…”

Section: Methodsmentioning

confidence: 99%

Influence of continuous cropping on severity of common root rot in wheat and barley

Conner

Atkinson

1989

Canadian Journal of Plant Pathology

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Section: Methodsmentioning

confidence: 99%

Influence of continuous cropping on severity of common root rot in wheat and barley

Conner

Atkinson

1989

Canadian Journal of Plant Pathology

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“…is a widespread soil-borne disease of wheat in Queensland (Wildermuth 1986) and in other parts of Australia (Wildermuth, unpubl.). Although the disease can aifect the sub-crown internode, crown, leaf base, coleoptile and roots of plants, its severity has been measured mainly by rating the extent of lesion development on sub-crown internodes (McKinney 1923;Russell and Sallans 1940;Burrage and Tinline 1960;Verma et al 1976~). With the exception of McKinney (1923), most workers have placed plants in one of the four categories: clean, slight, moderate and severe (Ledingham 1970).…”

Section: Introductionmentioning

confidence: 99%

Assessment of yield loss caused by common root rot in wheat cultivars in Queensland

Wildermuth¹,

Tinline²,

Mcnamara³

1992

Aust. J. Agric. Res.

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The effects of common root rot (CRR) caused by Bipolaris sorokiniana on grain yield, number of tillers, number of grains and grain weight of wheat plants were determined in four field experiments. Sites with different soil populations of B. sorokiniana were selected and inoculum of the fungus added to some plots. Disease and yield measurements were made on eight cultivars and lines differing in susceptibility to CRR. Timgalen, Songlen and Hartog were susceptible whereas Kite, 1008 C16, 1 4 1 4 and ISWYN 32 were partially resistant to CRR.Grain yield, tiller and grain number, but not grain weight decreased as disease severity increased. Diseased plants had lower tiller numbers than healthy ones and as a consequence a reduced number of grains and grain yield per plant.Five methods were compared for estimating yield loss caused by the disease. Polynomial regression equations for each cultivar between yield and disease rating of sub-crown internodes or multiple regression equations between yield and disease parameters of sub-crown internodes or tiller bases were established. A third method involved the projection of yield losses from one cultivar to other cultivars and in a fourth method yield losses were estimated from actual yields. In addition, an equation Yield loss (%) = 3 46 + 0.23 disease severity) (%) was established in one experiment and used as a fifth method in the other experiments.Yield losses estimated by methods 1 and 2 were similar and higher than those from the other methods. In areas where disease severity is high, methods 1 and 5 appear to be the most suitable for determining yield losses. Losses in a susceptible cultivar, Timgalen, varied between 13.9 and 23.9% whereas those in a partially resistant cultivar, 1008 C16, varied between 6.8 and 13.6%.

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“…Severity of eyespot is based on the number and size of lesions on the stem base, whereas Cephalosporium stripe severity is based on colonization of successive leaves up to and including the ear; for both diseases, stems are evaluated and grouped into one of the four categories (Bockus and Sim 1982;Specht and Murray 1990;de la Pen˜a and Murray 1994). Rating scores often are summarized as a percentage for common root rot (Burrage and Tinline 1960) or an index for eyespot (Strausbaugh and Murray 1989) and usually are associated with yield loss (Ledingham et al 1973).…”

Section: Methods Of Evaluating Wheat For Resistance To Soil-borne Patmentioning

confidence: 99%

Resistance to soil-borne diseases of wheat: Contributions from the wheatgrasses Thinopyrum intermedium and Th. ponticum

Li¹,

Conner²,

Murray³

2008

Can. J. Plant Sci.

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Eyespot, Cephalosporium stripe, and common root rot are soil-borne diseases that damage the stem bases, vascular system, subcrown internodes,and roots of wheat. Resistance in wheat to these diseases is insufficient to prevent significant yield loss when disease is severe. The wheatgrasses Thinopyrum intermedium and Th. ponticum are highly resistant to these diseases. Identification of disease-resistant wheat-Thinopyrum partial amphiploids, chromosome addition, substitution, and translocation lines makes them a valuable source of resistance genes for wheat breeding programs. Single chromosomes or chromosome segments containing resistance genes can be transferred into wheat to produce genetic stocks that afford a better understanding of the genetic control of resistance in wheatgrasses and new genetic resources for wheat improvement. Resistance to eyespot in Th. intermedium and Th. ponticum was associated with the homoeologous group 4 chromosomes, whereas resistance to Cephalosporium stripe was controlled by genes located on chromosomes 3 and 6 of Th. ponticum. Despite the fact that some eyespot- and common root rot-resistant wheat-Thinopyrum lines have blue kernels, resistance is not tightly linked to the blue aleurone trait. Key words: Thinopyrum intermedium, Th. ponticum, eyespot, Cephalosporium stripe, common root rot, Oculimacula yallundae, O. acuformis, Cephalosporium gramineum, Bipolaris sorokiniana

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Common Rootrot and Plant Development Following Treatments of Wheat Seed With Aldrin, Gamma Bhc, and Heptachlor, With and Without Mercury Fungicides

Abstract: Common rootrot in Chinook wheat seedlines was more pronounced after seed treatments with samma BHC at 1 oz.

Cited by 16 publications

References 2 publications

Influence of continuous cropping on severity of common root rot in wheat and barley

Influence of continuous cropping on severity of common root rot in wheat and barley

Assessment of yield loss caused by common root rot in wheat cultivars in Queensland

Resistance to soil-borne diseases of wheat: Contributions from the wheatgrasses Thinopyrum intermedium and Th. ponticum

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